1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f97ac1fd6bf4575b8b070c9c8bf50bcfc77e41dc24df43acbf857ed3326f85. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44889e98-036b-4345-b412-becfcdc994ae.json and https://artists.proofprofile.net/proofs/artist/44889e98-036b-4345-b412-becfcdc994ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded7a4634ec2bae4a2ffc18787671a17d0545264f1072f65a97e880a043556a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2069000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aa4d664bc7723895966cc5c8cd34114bfeaaca9afb59b6f2f824554fd4f676. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2075545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d847f8c33f130e99a3ca869cd89d06b75617ee466cd6f75aba8234004ba73ce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2075548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ff00c078afd240aff60615414f271e37931809d3aab3b7045a77d6080c66d. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:47:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2075549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75e1f04d0dc5d976d9fd9e1ecf4dbf312b1660636e1eba887e47880c9cb39da. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2075552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f7bc55ab121862f181e3b0f797df0e14f03b638c961cf1af8b64056fee9453. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2075553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12953860ea1a652e9ca8290995fa55e2a9c9df06d846e1f36980789c4460a1c0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2079089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6edff397fcaa5e259b3b42c37cd4d4a5b4a9a9d45578ed67545a6cb7686dec. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2080073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124e1248b8c1fb0976cf1315a0fd0b0662e9b83291d8e8dbffcf1d6332c1c2eb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2080074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39788c6ab7f77f40065525a1afec2bf542b39e8d800302230340654988cae000. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2046161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11221f05ef37b9036e4a12089454d70169a6780141de6cb08ee15b91d2c019f7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2046162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0491fd64e3d09cbc78eb29085d1fb356ba7f3db30bb3287020ea1843152eb33c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2046163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0106f33f46f3c7202301da28d99535a4425e2ad06dc05baa2df97887c0076d9a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2046167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4666924dd01672d5a53caa04307200f3d6bb6989a8b711eee6cbd42f61e9469. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2258832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54afac3fbb98d42502ea679ac2e61edab9cacf9c8becd95f0ecc74349273c8d6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2465326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85123baa908ba43bb2092097b11a3c1a3bf7f79a836158851cabe2d895f5fc2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:36:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2593591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b787cd92805e25df89f1cddc82f8ac7e602ccb05dfe7b255d3efb3a4822f14. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2593592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92c29a7149d732174dce74b47c80871ecaf9c3fdb970cee16b77a71b8001c24. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2593593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f2489a176c4fd6eb53677921fb05e6f84250f9b770dd0f8d00deb9e7c8d96. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2593594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee06bba535670203d2cdc81292b7e91b5f6d1547174bafc22534a35cf836820. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2593595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23d1aa01735d34973cdd9df17e0c185a3237f0b46ac358c0f6beba7853f0f76. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2593596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b27751a38a8d335544cedeee05520836a065075f2af8228efa3b55e131d89d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1D2593598.